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Paraquat dichloride

Paraquat dichloride Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Products Intro: Product Name:Paraquat dichloride
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Products Intro: CAS:1910-42-5
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Products Intro: Product Name:Paraquat dichloride
Company Name: Hangzhou FandaChem Co.,Ltd.
Tel: 0086 158 5814 5714 (Mobile; WhatsApp; Telegram)
Products Intro: Product Name:Paraquat ion;Paraquat;20%
Purity:20%/27.6% Package:200 liters Remarks:Paraquat 20% =Paraquat dichloride 27.6%
Company Name: J & K SCIENTIFIC LTD.  
Tel: 400-666-7788 +86-10-82848833
Products Intro: Product Name:Methyl viologen hydrate
Purity:98% Package:1G,250MG,5G
Paraquat dichloride Basic information
Product Name:Paraquat dichloride
Synonyms:dextrone-x;dexuron;dimethylviologenchloride;dwuchlorek1,1’-dwumetylo-4,4’-dwupirydyniowy;Gramoxin;Methyl Viologen hydrate,98%;Paraquat CL tetrahydrate 500mg [1910-42-5];Methyl viologen dichloride hydrate,1,1′-Dimethyl-4,4′-bipyridinium dichloride, Gramoxone, Paraquat dichloride
Product Categories:Pyridinium Compounds;Viologens (Photochromic, Related Compounds);PA - PENPesticides&Metabolites;500 Series Drinking Water Methods;Alpha sort;EPA;HERBICIDE;Functional Materials;Photochromic Compounds;Herbicides;Method 549Pesticides&Metabolites;N-PAlphabetic;P;Quaternary amonium salts
Mol File:1910-42-5.mol
Paraquat dichloride Structure
Paraquat dichloride Chemical Properties
Melting point >300 °C(lit.)
Boiling point 403.89°C (rough estimate)
density 1.25
refractive index 1.6400 (estimate)
storage temp. 0-6°C
form Crystals or Crystalline Powder
color Beige or pink to brown
Water Solubility soluble
Merck 7031
Stability:Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference1910-42-5(CAS DataBase Reference)
EPA Substance Registry System4,4'-Bipyridinium, 1,1'-dimethyl-, dichloride(1910-42-5)
Safety Information
Hazard Codes T+,N
Risk Statements 24/25-26-36/37/38-48/25-50/53
Safety Statements 22-28-36/37/39-45-60-61-28A
RIDADR UN 2811 6.1/PG 1
WGK Germany 3
RTECS DW2275000
HazardClass 6.1(a)
PackingGroup II
HS Code 29333990
ToxicityLD50 orally in rats: 125 mg/kg (Conning)
MSDS Information
Paraquat dichloride Usage And Synthesis
DescriptionParaquat dichloride is a dark blue liquid, non-combustible, stable herbicide chemical. It is incompatible with strong oxidising agents. On contact with fire paraquat decomposes gives off irritating or toxic fumes (or gases), nitrogen oxides, and hydrogen chloride. Paraquat dichloride contact and storage destroys metal. Paraquat dichloride hydrolyses in alkaline media and reacts with aluminium to produce hydrogen gas. Paraquat (N,N′-dimethyl-4,4′-bipyridinium dichloride) is one of the most widely used herbicides in the world. Paraquat dichloride is a herbicide currently registered to control weeds and grasses in many agricultural and non-agricultural areas. It is used preplant or preemergence on vegetables, grains, cotton, grasses, sugar cane, peanuts, potatoes, and tree plantation areas; post-emergence around fruit crops, vegetables, trees, vines, grains, soybeans, and sugar cane. It is also used on non-crop areas such as public airports, electric transformer stations, and around commercial buildings to control weeds. It has been reported that about seven pesticide products are registered which contain the active ingredient paraquat dichloride and classified as restricted use pesticides (RUPs). Paraquat dichloride and the products are primarily intended for ‘Occupational Use’. In the United States, Paraquat is classified as ‘restricted commercial use’, and people must obtain a license to use the product.
Chemical PropertiesParaquat is a yellow solid with a faint, ammonia-like odor.
Chemical Propertiesoff-white powder
General DescriptionColorless to yellow crystalline solid. Used as a contact herbicide and desiccant.
Air & Water ReactionsWater soluble.
Reactivity ProfileParaquat dichloride is stable in acidic media, but unstable in alkaline media. Paraquat dichloride is photochemically decomposed by UV irradiation in aqueous solutions and is rapidly inactivated by soil. The neat chemical may be sensitive to light. Paraquat dichloride is corrosive to metal and Paraquat dichloride can react with strong acids, bases, and oxidizing agents. Paraquat dichloride is hydrolyzed by alkali compounds and Paraquat dichloride is inactivated by inert clays and anionic surfactants.
Health HazardCan cause death due to severe injury to the lungs. The lowest lethal oral dose reported in humans is 43 mg/kg.
Fire HazardAvoid strong oxidizers.
Contact allergensParaquat is a quaternary ammonium compound with herbicide properties, as diquat. It is contained in Cekuquat? or Dipril?. It can cause contact and phototoxic contact dermatitis, acne, and leukoderma mainly in agricultural workers.
Potential ExposureThose engaged in manufacture, formulation and application of this herbicide. Classified for restricted use: limited to use by a certified applicator, or those under applicator’s direct supervision.
First aidIf this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water, or bentonite clay in water, or activated charcoal in water; and induce vomiting. Do not make an unconscious person vomit. Medical observation is recommended for 2448 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures. Rush to a health care facility.
ShippingUN2781 Bipyridilium pesticide, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Purification MethodsRecrystallise the dichloride from MeOH/acetone mixture. It has also been recrystallised three times from absolute EtOH [Bancroft et al. Anal Chem 53 1390 1981]. Dry it at 80o in a vacuum. [Beilstein 23/8 V 30.]
IncompatibilitiesIncompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides (hydrolysis), alkylarylsulfonate wetting agents. Corrosive to metals. Decomposes in presence of ultraviolet (UV) light. Decomposes in heat (see physical properties, above) and in the presence of UV light, producing nitrogen oxides, hydrogen chloride.
Waste DisposalParaquat is rapidly inactivated in soil. It is also inactivated by anionic surfactants. Therefore an effective and environmentally safe disposal method would be to mix the product with ordinary household detergent and bury the mixture in clay soil. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.
Paraquat dichloride Preparation Products And Raw materials
Raw materialsAzabenzene
Tag:Paraquat dichloride(1910-42-5) Related Product Information
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